The Spanish conquest of Petén was the last stage of the conquest of Guatemala, a prolonged conflict during the Spanish colonisation of the Americas. A wide lowland plain covered with dense rainforest, Petén contains a central drainage basin with a series of lakes and areas of savannah. It is crossed by several ranges of low karstic hills and rises to the south as it nears the Guatemalan Highlands. The conquest of Petén, a region now incorporated into the modern republic of Guatemala, climaxed in 1697 with the capture of Nojpetén, the island capital of the Itza kingdom, by Martín de Ursúa y Arizmendi. With the defeat of the Itza, the last independent and unconquered native kingdom in the Americas fell to European colonisers.